Blue Cheese Burgers with Balsamic Caramelized Purple Onion

1. 1

   Put butter in a skillet over medium heat.

2. 2

   Get the onions going by slicing them thinly into rings and then again once across the rings to make half circles.

3. 3

   Put in a skillet with the butter and toss around.

4. 4

   Sprinkle a little salt over them.

5. 5

   Cover with a lid and let the onions cook down until they are reduced in size by half.

6. 6

   Stir them occasionally.

7. 7

   Once they have cooked down (add more butter if necessary), add the brown sugar and balsamic vinegar.

8. 8

   Basically, you are caramelizing the onions and then making a balsamic reduction.

9. 9

   Meanwhile, cook your hamburger patties and toast the buns.

10. 10

    To assemble, spread mayo on the buns and put on a patty, a spoonful of the onions and as much blue cheese as you can pile on and then the bun.

11. 11

    You know how to do that!

* Per serving · 4 servings · Values may vary.